maxdb_stmt_result_metadata

(PECL maxdb:1.0-7.6.00.38)

maxdb_stmt_result_metadata — Returns result set metadata from a prepared statement

Description

Procedural style:

resource maxdb_stmt_result_metadata ( resource $stmt )

Object oriented style (method):

stmt

resource result_metadata ( void )

If a statement passed to maxdb_prepare() is one that produces a result set, maxdb_stmt_result_metadata() returns the result resource that can be used to process the meta information such as total number of fields and individual field information.

Note: This result set pointer can be passed as an argument to any of the field-based functions that process result set metadata, such as:

maxdb_num_fields()

maxdb_fetch_field()

maxdb_fetch_field_direct()

maxdb_fetch_fields()

maxdb_field_count()

maxdb_field_seek()

maxdb_field_tell()

maxdb_free_result()

The result set structure should be freed when you are done with it, which you can do by passing it to maxdb_free_result()

Note: The result set returned by maxdb_stmt_result_metadata() contains only metadata. It does not contain any row results. The rows are obtained by using the statement handle with maxdb_fetch().

Return Values

maxdb_stmt_result_metadata() returns a result resource or FALSE if an error occured.

Examples

Example #1 Object oriented style


<?php

$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");



$maxdb->query("CREATE TABLE temp.friends (id int, name varchar(20))");



$maxdb->query("INSERT INTO temp.friends VALUES (1,'Hartmut')");

$maxdb->query("INSERT INTO temp.friends VALUES (2, 'Ulf')");



$stmt = $maxdb->prepare("SELECT id, name FROM temp.friends");

$stmt->execute();



/* get resultset for metadata */

$result = $stmt->result_metadata();



/* retrieve field information from metadata result set */

$field = $result->fetch_field();



printf("Fieldname: %s\n", $field->name);



/* close resultset */

$result->close();



/* close connection */

$maxdb->close();

?>

Example #2 Procedural style


<?php

$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");



maxdb_query($link, "CREATE TABLE temp.friends (id int, name varchar(20))");



maxdb_query($link, "INSERT INTO temp.friends VALUES (1,'Hartmut')");

maxdb_query($link, "INSERT INTO temp.friends VALUES (2, 'Ulf')");



$stmt = maxdb_prepare($link, "SELECT id, name FROM temp.friends");

maxdb_stmt_execute($stmt);



/* get resultset for metadata */

$result = maxdb_stmt_result_metadata($stmt);



/* retrieve field information from metadata result set */

$field = maxdb_fetch_field($result);



printf("Fieldname: %s\n", $field->name);



/* close resultset */

maxdb_free_result($result);



/* close connection */

maxdb_close($link);

?>

The above example will output something similar to:

Fieldname: ID

maxdb_stmt_result_metadata

Description

Return Values

Examples

See Also